Heavy-Duty Ratchet/Antenna Mount - 316 Stainless SteelThis heavy-duty mount is the finest available device for supporting antennae.Features:Has standard 1"-14" male threadsIncludes: Loran cable holeRequires: (4) 1/4" fastenersCenter to center hole across (Length): 2-7/8"Center to center hole same side (Width): 1-3/8"Material:316 Stainless SteelBase: 3-3/4" x 2-1/4"Dimensions: 3-13/16"L x 2-1/4"W